Category "mail-server"

isync: "SSL error connection mail.example.com... certificate has expired" but the certificate has not expired

I've checked with certbot and a bunch of external diagnostic tools and everything seems fine, but I cannot sync my mailboxes. Is there a way to trace the root o

DNS ERROR resolving MX

I'm installing Zimbra Collaboration Server on my local machine to test them mail server. During installation I got error: DNS ERROR resolving MX for my.local.d